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3D-Printed PLA Guide Versus Resin Guide in Mandibular Molar Implant Placement (CGIIPMM-PLA-MR)

12. September 2026 aktualisiert von: Mohamed Esmail Ahmed Hassan

Computer Guided Immediate Implant Placement in Mandibular Molars Using Patient Specific 3D Printed Polylactic Acid Guide Versus Modified Resin Guide

This randomized clinical trial compares two tooth-supported computer-guided surgical guide systems for immediate implant placement in mandibular molar extraction sockets: a patient-specific 3D-printed PLA guide system and a modified resin guide system. The study evaluates implant positioning accuracy, primary implant stability, and surgical time.

Studienübersicht

Status

Abgeschlossen

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

This randomized clinical trial compares two tooth-supported computer-guided surgical guide systems for immediate implant placement in mandibular molar extraction sockets: a patient-specific 3D-printed polylactic acid (PLA) guide system and a modified resin guide system. Preoperative CBCT and digital intraoral scans were used for prosthetically driven virtual implant planning and fabrication of the surgical guides.

Implant positioning accuracy was assessed by comparing the planned and actual implant positions using preoperative and postoperative CBCT datasets. Angular deviation, coronal deviation at the implant platform, and apical deviation were recorded.

Primary implant stability was assessed immediately after implant placement using Implant Stability Quotient (ISQ) measurements obtained with an Osstell device. Surgical time was recorded from seating of the surgical guide and initiation of osteotomy until completion of implant insertion.

The study was designed to compare the performance of the two guide systems in immediate mandibular molar implant placement.

Studientyp

Interventionell

Einschreibung (Tatsächlich)

20

Phase

  • Unzutreffend

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienorte

    • New Cairo
      • Cairo, New Cairo, Ägypten, 11511
        • Future University in Egypt (FUE)

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

  • Erwachsene

Akzeptiert gesunde Freiwillige

Nein

Beschreibung

Inclusion Criteria:

  • Age 20-50 years.
  • Non-restorable mandibular first molar indicated for extraction.
  • Sufficient bony support for implant placement without the need for significant bone augmentation.
  • Good oral hygiene and motivation.
  • Adequate prosthetic space.
  • Ability and willingness to undergo the surgical procedure and follow-up.
  • Suitable for computer-guided, tooth-supported implant placement.

Exclusion Criteria:

  • Uncontrolled systemic diseases that may impair healing (e.g., uncontrolled diabetes or hypertension).
  • Severe periodontal disease.
  • Patients undergoing chemotherapy or radiotherapy.
  • Insufficient prosthetic space.
  • Heavy smokers.

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Behandlung
  • Zuteilung: Zufällig
  • Interventionsmodell: Parallele Zuordnung
  • Maskierung: Single

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: patient specific 3d printed PLA guide
Immediate implant placement in mandibular molar extraction sockets using a patient-specific tooth-supported 3D-printed PLA surgical guide system. Preoperative CBCT and digital intraoral scans were used for prosthetically driven virtual implant planning and guide fabrication. The guide was fabricated from PLA according to the planned implant position. Following atraumatic tooth extraction and socket preparation, the guide was seated and osteotomy preparation was performed through the guide's guiding channel according to the planned trajectory, followed by immediate implant insertion. Primary implant stability was assessed using an Osstell device and Implant Stability Quotient (ISQ) measurements.
Preoperative virtual planning was performed using CBCT data and digital intraoral scans. The datasets were used for prosthetically driven implant planning and fabrication of a patient-specific 3D-printed PLA surgical guide. Following atraumatic tooth extraction and socket preparation, the guide was seated and osteotomy preparation was performed through the guiding channel according to the planned implant position and trajectory. The implant was then immediately inserted. Primary implant stability was assessed using an Osstell device and Implant Stability Quotient (ISQ) measurements.
Aktiver Komparator: Modified Resin guide
Immediate implant placement in mandibular molar extraction sockets using a tooth-supported modified resin surgical guide system. Preoperative CBCT and digital intraoral scans were used for prosthetically driven virtual implant planning and guide fabrication. The guide was fabricated from light-cured surgical-guide resin according to the planned implant position. Following atraumatic tooth extraction and socket preparation, the guide was seated and osteotomy preparation was performed through the guide's guiding channel according to the planned trajectory, followed by immediate implant insertion. Primary implant stability was assessed using an Osstell device and Implant Stability Quotient (ISQ) measurements.
Preoperative virtual planning was performed using CBCT data and digital intraoral scans. The datasets were used for prosthetically driven implant planning and fabrication of a tooth-supported modified resin surgical guide. Following atraumatic tooth extraction and socket preparation, the guide was seated and osteotomy preparation was performed through the guiding channel according to the planned implant position and trajectory. The implant was then immediately inserted. Primary implant stability was assessed using an Osstell device and Implant Stability Quotient (ISQ) measurements.

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
accuracy of implant position
Zeitfenster: Assessed within 1 week postoperatively, following acquisition of the postoperative CBCT scan.
Accuracy of implant placement will be evaluated by comparing the planned implant position from the preoperative digital plan with the actual implant position obtained from the postoperative CBCT scan. Deviations will be assessed in three dimensions, including angular deviation (degrees), coronal deviation (platform) (mm), and apical deviation (mm). Measurements will be performed using specialized implant-planning software by superimposing the preoperative and postoperative datasets. Lower deviation values indicate greater agreement between the planned and actual implant positions.
Assessed within 1 week postoperatively, following acquisition of the postoperative CBCT scan.

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
primary implant stability by osstell
Zeitfenster: Measured immediately at the time of implant placement during the surgical procedure.
Primary implant stability will be assessed using an Osstell device, which measures Implant Stability Quotient (ISQ) values through resonance frequency analysis. A SmartPeg will be attached to the implant, and ISQ readings will be taken in two perpendicular directions (buccolingual and mesiodistal). Higher ISQ values indicate greater mechanical stability. The mean ISQ value for each implant will be recorded and used for analysis
Measured immediately at the time of implant placement during the surgical procedure.
surgical time
Zeitfenster: Assessed intraoperatively, measured during the surgical appointment, and recorded immediately after surgery
Surgical time will be recorded to evaluate the procedural efficiency of guided immediate implant placement. Time will be measured from seating of the surgical guide and initiation of osteotomy until completion of implant insertion. The total duration will be recorded in minutes.
Assessed intraoperatively, measured during the surgical appointment, and recorded immediately after surgery

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Publikationen und hilfreiche Links

Die Bereitstellung dieser Publikationen erfolgt freiwillig durch die für die Eingabe von Informationen über die Studie verantwortliche Person. Diese können sich auf alles beziehen, was mit dem Studium zu tun hat.

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Tatsächlich)

2. November 2025

Primärer Abschluss (Tatsächlich)

10. August 2026

Studienabschluss (Tatsächlich)

10. September 2026

Studienanmeldedaten

Zuerst eingereicht

12. September 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

12. September 2026

Zuerst gepostet (Tatsächlich)

17. September 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

17. September 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

12. September 2026

Zuletzt verifiziert

1. September 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Andere Studien-ID-Nummern

  • FUE.REC(78)/10-2025

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

NEIN

Beschreibung des IPD-Plans

Individual participant data will not be shared because of participant privacy and confidentiality considerations. Only aggregate study results will be reported.

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

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